Smoking-pipe.



J. A. DONNBLLY.

SMOKING PIPE.

APPLICATION TILED PEBJZI, 1913.

Patented Dec. 8,1914.

THE NORRIS PETERS C0, PHOTO-LITHQ, WASHING TON D C.

.I' @FFICE.

JAMES A. DONNELLY, OF NEW YORK, N. Y.

SMOKINGPPIPE.

Specification of Letters Patent.

Patented Dec. 8, 1914.

Application filed February 21, 1913. Serial No 745,864.

To all whom it may concern Be it known that I, James A. DONNELLY, of the city of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Smoking-Pipes; and I do hereby declare the following to be a full, cl tar, and exactdescription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

y invention contemplates new and useful improvements in that class of smoking pipes which are primarily adapted to aid in readily cleaning the pipe and insuring a relatively dry smoke passing through the stem.

My invention is illustrated in the accompanying drawings where- Figure 1 is a vertical, longitudinal sectional view of a pipe constructed in accordance with my invention, and Fig. 2 shows the parts removed.

Referring to the drawing, the stem 1 is or may be of the usual or any preferred construction at its outer end or mouth-piece and is shown formed with the usual reduced portion 2 adapted to enter the hollow portion 3 ordinarily formed integral with the bowl. The stem or bit 1 of a pipe is usually formed of amber, rubber, horn or similar substances and. as these materials are of an inflammable nature they usually terminate short of the bowl, and thus leave an enlarged space where the moisture and fouling matter may readily collect. I have shown the stem formed with a tube 4 of metal or other fireproof material which passes through the hollow portion 3 and is adapted when the stem is fully seated to have its inner extremity 5 flush with the inner face of the bowl at the vent. By this means the tube a is the only passage way from the bowl to the month-piece and as it is removable with the latter and of the same internal bore, it may be readily withdrawn and cleaned and the hollow lateral portion 3 of the bowl has no opportunity to become unclean. Thus the pipe is very readily cleaned at the portion ordinarily most difficult to clean that is, between the bowl and inner end of the mouth-piece.

I have shown the bowl open at both its upper and lower ends and the lower end provided with a metallic ring or flange 6 seated Within the bore of the bowl and projecting downward therefrom a short distance. According to my invention a plug .or cap of any prc'lcrrml material may close the lower end of the bowl by placing it against the depending ring and turning it so that the ring cuts into the plug and forms a portion filling snugly within and around the flange; This plug I have shown with its central portion 7 slightly raised so that when it is seated within the flange :its upper edge is a short distance below the vent from the bowl to the stem. I have found that the simplest and most cll'octivc material for this plug is cork as it does not shrink or expand as wood does. The cork commonly used in a wine bottle will serve every purpose. In practice it is only necessary to place the innor end of a cork against the sharp edge of the flange G and turn it with slight pressure so as to cut a short distance into the cork. Outside of this circular incision the cork may be cut away as at 8 so that the central raised portion 7 will [it within the flange and the outer shoulder will contact with the bot tom of the bowl. Obviously, however, the cork is not necessarily cut away as at 8. The same result will be attained if its en tire top surface is flat, the only difi'erence being that the part 7 will not extend as far into the bowl.

It will be noted that without the use of any mechanical parts requiring adjustment I am enabled to always maintain a stratum of tobacco beneath the vent, that is, the outlet from the bowl to the stem. By this means the condensed vapors, instead of passing through the stem, are collected in the tobacco below the vent. and cause no annoyance to the smoker. In time this moisture may form a film on the upper surface 7 of the plug which may readily be scraped ofl when the bowl is reamed. The plug may be readily removed as it is held only by frictional contact and fresh tobacco may be supplied to the bowl from its lower end with out ail'ecting the burning tobacco above. When the stem is removed it carries with it all the stem parts requiring cleaning as tube 4: is the only passage from the bowl to the mouth-piece. Consequently the tubular part 3 of the pipe cannot become clogged.

I claim as my invention 1. In a smoking pipe, the combination with a bowl open at its lower end and having an annular flange projecting outward from said open end, of a plug of soft material, as cork, adapted to close said open end and formed with a groove to receive said flange.

2. In a smoking pipe, the combination with a bowl open at its lower end and having an annular metal flange projecting out- Ward from said open end, of a plug of soft material, as cork, adapted to close said open end, said plug having a central raised portion and an outer rim, and formed with a groove between said raised portion and said rim to receive said flange.

3. In a smoking pipe, the combination with a bowl open at its lower end and having an annular metallic flange projecting Copies of this patent may be obtained for outward from said end, of a removable plug for closing said open end, said plug being formed of soft material, as cork, and adapted to be pressed against the edge of said metallic flange, whereby the latter may cut into said plug and hold it by frictional engagement.

In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

GRAFTON L. MoGILL, MARION I. BALFOUR.

Washington, D. C. 

